In a Cisco SD-Access fabric, which control plane protocol is used for mapping and resolving endpoints?

DHCP (Dynamic Host Configuration Protocol) is used for assigning IP addresses to endpoints, not for the core control plane function of mapping and resolving endpoint locations in an SD-Access fabric.

VXLAN (Virtual Extensible LAN) is the data plane encapsulation protocol used in SD-Access to create the overlay network, but it does not perform the control plane function of endpoint mapping and resolution.

SXP (SGT Exchange Protocol) is used for propagating Security Group Tags (SGTs) within a Cisco TrustSec environment, which is related to policy enforcement but not the primary control plane for endpoint location mapping in SD-Access.

LISP (Locator/ID Separation Protocol) is the foundational control plane protocol within Cisco SD-Access fabric architectures. It decouples endpoint identifiers (EIDs) from routing locators (RLOCs), allowing the fabric to dynamically discover and map endpoint locations for seamless host mobility and efficient traffic forwarding.